My Girlfriend Loves My Blood

When a beautiful new girl transfers to your school, it falls to you to give her a tour. Things seem to be going well… until you cut your hand. Now you're being chased by powerful vampires from the Underworld who want your special blood, and your only respite is a group of vampire sisters who swear to use your powers for good! Can you learn to trust these girls and free them from their evil ruler, or are you all doomed to a fate worse than death?